With Al2O3 as inhibitor (which can be etched after calcination), monodispersed Al2O3-ZrO2 nanopowder was successful prepared by co-precipitation method. The as-prepared powders were characterized by acoustic particle sizer (APS), SEM, TEM and XRD, respectively. Crystalline and non-agglomerated nanometric Al2O3-ZrO2 powders with very small crystallite size (similar to 7 nm) and narrow size distribution can be obtained. The relative yield was effected dramatically by pH and the ratio of M-AHC: M-Zr. Green bodies have an ultrafine uniform microstructure without apparent macropore through 200 MPa CIP treatment. The relative density of the grains can be reached to similar to 98.2% by sintering at 1050 degrees C for 4 h, with an average grain size degrees 39 nm. (C) 2016 Elsevier B.V. All rights reserved.